iso·​oc·​tane ˌī-sō-ˈäk-ˌtān How to pronounce isooctane (audio)
: an octane of branched-chain structure or a mixture of such octanes
especially : a flammable liquid octane used in determining the octane number of fuels

Word History


International Scientific Vocabulary

First Known Use

1909, in the meaning defined above

Time Traveler
The first known use of isooctane was in 1909

Dictionary Entries Near isooctane

Cite this Entry

“Isooctane.” Dictionary, Merriam-Webster, Accessed 21 Feb. 2024.

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